Ashton in war with porn firm

Adult film executives have fired back at Hollywood actor Ashton Kutcher after he vowed to take legal action over the use of his name to promote a sex tape, insisting the actor's threats are "without merit".

Vivid Entertainment chiefs are set to release a new porn video featuring Brittney Jones, who claims to have slept with Kutcher.

A press release for the clip declares: "Ashton's fans will undoubtedly enjoy seeing what the star himself may have experienced."

Attorneys for the Just Married star claim the association infringes on his "marketable celebrity identity value" and have threatened to sue if his name is not removed.

Vivid boss Steve Hirsch has now hit back at the claims, passing blame for any damage that may be caused to Kutcher's reputation - because they didn't start the rumour, reports TMZ.com.